Make the peanut sauce. Whisk together all ingredients, adding more water to reach desired consistency, if needed.
Pat shrimp dry with a paper towel and season on both sides with salt and pepper. Arrange lettuce leaves on a serving platter.
Heat 1 tablespoon oil in a large skillet over medium high heat. Add shrimp and cook until pink, 2 minutes per side. Transfer to a plate and set aside.
In same skillet, heat remaining 1 tablespoon olive oil and add scallions, peppers, and carrots. Cook until veggies are slightly softened but still crisp, 3 minutes. Add shrimp back and cook until heated through.
Divide shrimp and veggies between lettuce leaves. Garnish with fresh cilantro and serve with peanut sauce.
Video
Notes
Make ahead: The shrimp filling can be made 3 to 4 days ahead of time and stored in the ridge. The peanut dressing will keep well for up to a week.